- Introduction
 - 
					Catalog
					
					
- 
							Catalog Category
							
							
- catalog_category.assignedProducts
 - catalog_category.assignProduct
 - catalog_category.create
 - catalog_category.currentStore
 - catalog_category.delete
 - catalog_category.info
 - catalog_category.level
 - catalog_category.move
 - catalog_category.removeProduct
 - catalog_category.tree
 - catalog_category.update
 - catalog_category.updateProduct
 
 - Catalog Category Attributes
 - Catalog Product
 - Catalog Product Attribute
 - 
							Catalog Product Attribute
Media - Catalog Product Attribute Set
 - 
							Catalog Product Custom
Option - Catalog Product Custom Option Value
 - Catalog Product Downloadable Link
 - Catalog Product Link
 - Catalog Product Tag
 - Catalog Product Tier Price
 - Catalog Product Types
 
 - 
							Catalog Category
							
							
 - Catalog Inventory
 - Checkout
 - Create Your Own API
 - Customer
 - Directory
 - Sales
 - Enterprise Customer Balance
 - Enterprise Gift Card
 - Enterprise Gift Message
 - Miscellaneous
 - WS-I Compliance
 
Module: Mage_Catalog
Resource: catalog_product_custom_option
Aliases: product_custom_option
Methods:
- product_custom_option.add - Add a new custom option to a product
 - product_custom_option.update - Update the product custom option
 - product_custom_option.types - Get the list of available custom option types
 - product_custom_option.list - Retrieve the list of product custom options
 - product_custom_option.info - Get full information about the custom option in a product
 - product_custom_option.remove - Remove the custom option
 
Faults:
| Fault Code | Fault Message | 
|---|---|
| 101 | Product with requested id does not exist. | 
| 102 | Provided data is invalid. | 
| 103 | Error while saving an option. Details are in the error message. | 
| 104 | Store with requested code/id does not exist. | 
| 105 | Option with requested id does not exist. | 
| 106 | Invalid option type provided. Call 'types' to get list of allowed option types. | 
| 107 | Error while deleting an option. Details are in the error message. |